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Stelian Popfefb6c12008-01-30 21:15:54 +00001/*
2 * (C) Copyright 2006
Stelian Pop567fb852008-05-08 22:52:09 +02003 * DENX Software Engineering <mk@denx.de>
Stelian Popfefb6c12008-01-30 21:15:54 +00004 *
5 * See file CREDITS for list of people who contributed to this
6 * project.
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
21 * MA 02111-1307 USA
22 */
23
24#include <common.h>
25
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020026#if defined(CONFIG_USB_OHCI_NEW) && defined(CONFIG_SYS_USB_OHCI_CPU_INIT)
Stelian Popfefb6c12008-01-30 21:15:54 +000027
28#include <asm/arch/hardware.h>
Stelian Pop983c1db2008-03-26 20:52:32 +010029#include <asm/arch/io.h>
30#include <asm/arch/at91_pmc.h>
Jean-Christophe PLAGNIOL-VILLARDdc39ae92009-04-16 21:30:44 +020031#include <asm/arch/clk.h>
Stelian Popfefb6c12008-01-30 21:15:54 +000032
33int usb_cpu_init(void)
34{
Matthias Fuchs0701f732010-03-25 14:30:13 +010035 at91_pmc_t *pmc = (at91_pmc_t *)AT91_PMC_BASE;
Stelian Pop3e0cda02008-11-09 00:14:46 +010036
37#if defined(CONFIG_AT91CAP9) || defined(CONFIG_AT91SAM9260) || \
RONETIX - Ilko Ilievfaa14ba2009-06-05 16:54:31 +020038 defined(CONFIG_AT91SAM9263) || defined(CONFIG_AT91SAM9G20) || \
39 defined(CONFIG_AT91SAM9261)
Stelian Pop3e0cda02008-11-09 00:14:46 +010040 /* Enable PLLB */
Matthias Fuchs0701f732010-03-25 14:30:13 +010041 writel(get_pllb_init(), &pmc->pllbr);
42 while ((readl(&pmc->sr) & AT91_PMC_LOCKB) != AT91_PMC_LOCKB)
Stelian Pop3e0cda02008-11-09 00:14:46 +010043 ;
Sergey Matyukevich64203c72010-06-09 23:09:06 +040044#elif defined(CONFIG_AT91SAM9G45) || defined(CONFIG_AT91SAM9M10G45)
45 /* Enable UPLL */
46 writel(readl(&pmc->uckr) | AT91_PMC_UPLLEN | AT91_PMC_BIASEN,
47 &pmc->uckr);
48 while ((readl(&pmc->sr) & AT91_PMC_LOCKU) != AT91_PMC_LOCKU)
49 ;
50
51 /* Select PLLA as input clock of OHCI */
52 writel(AT91_PMC_USBS_USB_UPLL | AT91_PMC_USBDIV_10, &pmc->usb);
Stelian Pop3e0cda02008-11-09 00:14:46 +010053#endif
54
Stelian Popfefb6c12008-01-30 21:15:54 +000055 /* Enable USB host clock. */
Matthias Fuchs0701f732010-03-25 14:30:13 +010056 writel(1 << AT91_ID_UHP, &pmc->pcer);
Stelian Popd99a8ff2008-05-08 20:52:22 +020057#ifdef CONFIG_AT91SAM9261
Matthias Fuchs0701f732010-03-25 14:30:13 +010058 writel(AT91_PMC_UHP | AT91_PMC_HCK0, &pmc->scer);
Stelian Popd99a8ff2008-05-08 20:52:22 +020059#else
Matthias Fuchs0701f732010-03-25 14:30:13 +010060 writel(AT91_PMC_UHP, &pmc->scer);
Stelian Popd99a8ff2008-05-08 20:52:22 +020061#endif
Stelian Popfefb6c12008-01-30 21:15:54 +000062
63 return 0;
64}
65
66int usb_cpu_stop(void)
67{
Matthias Fuchs0701f732010-03-25 14:30:13 +010068 at91_pmc_t *pmc = (at91_pmc_t *)AT91_PMC_BASE;
69
Stelian Popfefb6c12008-01-30 21:15:54 +000070 /* Disable USB host clock. */
Matthias Fuchs0701f732010-03-25 14:30:13 +010071 writel(1 << AT91_ID_UHP, &pmc->pcdr);
Stelian Popd99a8ff2008-05-08 20:52:22 +020072#ifdef CONFIG_AT91SAM9261
Matthias Fuchs0701f732010-03-25 14:30:13 +010073 writel(AT91_PMC_UHP | AT91_PMC_HCK0, &pmc->scdr);
Stelian Popd99a8ff2008-05-08 20:52:22 +020074#else
Matthias Fuchs0701f732010-03-25 14:30:13 +010075 writel(AT91_PMC_UHP, &pmc->scdr);
Stelian Popd99a8ff2008-05-08 20:52:22 +020076#endif
Stelian Pop3e0cda02008-11-09 00:14:46 +010077
78#if defined(CONFIG_AT91CAP9) || defined(CONFIG_AT91SAM9260) || \
Nicolas Ferredf486b12009-03-22 14:48:16 +010079 defined(CONFIG_AT91SAM9263) || defined(CONFIG_AT91SAM9G20)
Stelian Pop3e0cda02008-11-09 00:14:46 +010080 /* Disable PLLB */
Matthias Fuchs0701f732010-03-25 14:30:13 +010081 writel(0, &pmc->pllbr);
82 while ((readl(&pmc->sr) & AT91_PMC_LOCKB) != 0)
Stelian Pop3e0cda02008-11-09 00:14:46 +010083 ;
Sergey Matyukevich64203c72010-06-09 23:09:06 +040084#elif defined(CONFIG_AT91SAM9G45) || defined(CONFIG_AT91SAM9M10G45)
85 /* Disable UPLL */
86 writel(readl(&pmc->uckr) & (~AT91_PMC_UPLLEN), &pmc->uckr);
87 while ((readl(&pmc->sr) & AT91_PMC_LOCKU) == AT91_PMC_LOCKU)
88 ;
Stelian Pop3e0cda02008-11-09 00:14:46 +010089#endif
90
Stelian Popfefb6c12008-01-30 21:15:54 +000091 return 0;
92}
93
94int usb_cpu_init_fail(void)
95{
96 return usb_cpu_stop();
97}
98
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020099#endif /* defined(CONFIG_USB_OHCI) && defined(CONFIG_SYS_USB_OHCI_CPU_INIT) */